Raven, C. E. (1950). John Ray, naturalist: His life and works (2nd ed.). Cambridge University Press.
Citace podle Chicago (17th ed.)Raven, Charles E. John Ray, Naturalist: His Life and Works. 2nd ed. Cambridge [Cambridgeshire]: Cambridge University Press, 1950.
Citace podle MLA (8th ed.)Raven, Charles E. John Ray, Naturalist: His Life and Works. 2nd ed. Cambridge University Press, 1950.
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